Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2acac09618ca266…

MALICIOUS

PDF

40.6 KB Created: 2021-05-19 09:36:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3efe76728398ad795d924384fa021de7 SHA-1: d3156caff0b9d1b69586b79d003fad6a555cc3fd SHA-256: f2acac09618ca26652fdae1170e08916a75b77fe4f839642216f1cdc65f0cdda
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links to external websites, many of which are structured as SEO-optimized PDF links, suggesting a link farm or content aggregation strategy. The primary URL, 'https://netcdn.xyz/app/835599320/what-tiktok-free-views-without-verification-game-hack', along with others pointing to game hacks and cheats, indicates a lure for users seeking unauthorized access or in-game advantages. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/835599320/what-tiktok-free-views-without-verification-game-hack
    • http://1a-vermietung.com/images/minecraft-windows-10-free-trial_GM479516143.pdf
    • http://1a-vermietung.com/images/robux-prices_GM431946152.pdf
    • http://1a-vermietung.com/images/no-verification-coin-master-hack_GM406889139.pdf
    • http://1a-vermietung.com/images/coin-master-free-cards-link-2021_GM406889139.pdf
    • http://1a-vermietung.com/images/free-spin-link-coin-master_GM406889139.pdf
    • http://1a-vermietung.com/images/how-you-get-free-robux_GM431946152.pdf
    • http://1a-vermietung.com/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
    • http://1a-vermietung.com/images/get-free-robux-without-doing-anything_GM431946152.pdf
    • http://1a-vermietung.com/images/coinmaster-free-cards_GM406889139.pdf
    • http://1a-vermietung.com/images/how-often-pubg-uc-advance_GM1330123889.pdf
    • http://1a-vermietung.com/images/minecraft-java-edition-download-free_GM479516143.pdf
    • http://1a-vermietung.com/images/coin-master-hack_GM406889139.pdf
    • http://1a-vermietung.com/images/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://1a-vermietung.com/images/coin-master-free-spins-hack_GM406889139.pdf
    • http://1a-vermietung.com/images/how-to-get-free-robux-without-verification_GM431946152.pdf
    • http://1a-vermietung.com/images/free-roebucks-no-human-verification_GM431946152.pdf
    • http://1a-vermietung.com/images/coin-master-free-spins-blogspot_GM406889139.pdf
    • http://1a-vermietung.com/images/free-robux-hack_GM431946152.pdf
    • http://1a-vermietung.com/images/free-robux-for-free_GM431946152.pdf
    • http://1a-vermietung.com/images/wurst-client-18-9_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000448e.bin
bba09406a10d445c39679abf7069f37222b9dc989be56709f478ce0b6ea3cdef		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x448E 24164 bytes
font_01_sfnt_off00007b8f.bin
203acb135737b70a0732b138a4c26dd5052b0a00c2ce5bce16002da67b0909a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8F 18484 bytes

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